{
  "manageEntity": {
    "action": "Save",
    "entityId": "1022752",
    "entityType": "Track",
    "nonce": "0x6e696ccf2cbe271fb0ff0504ef79bb072d58892d7794d9bd20df56a3852757c0",
    "signature": "0x578ccc1ef9a59702f6f5e6b83769a53d5c644b459dc8602ed43f86f30f970cdc2e0c7126247d1a009c68cd0778c53ead6af2f65ce8ad3c62ffadd6bb8d5334361c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}